CN103941449B - Display device and electronic equipment - Google Patents

Display device and electronic equipment Download PDF

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Publication number
CN103941449B
CN103941449B CN201410030453.9A CN201410030453A CN103941449B CN 103941449 B CN103941449 B CN 103941449B CN 201410030453 A CN201410030453 A CN 201410030453A CN 103941449 B CN103941449 B CN 103941449B
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CN
China
Prior art keywords
secondary pixel
row
pixel
display device
image display
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201410030453.9A
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Chinese (zh)
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CN103941449A (en
Inventor
山口英将
加边正章
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Japan Display Central Inc
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Japan Display Central Inc
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Publication of CN103941449A publication Critical patent/CN103941449A/en
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Expired - Fee Related legal-status Critical Current
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Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3648—Control of matrices with row and column drivers using an active matrix
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
    • G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
    • G09G3/34—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source
    • G09G3/36—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters by control of light from an independent source using liquid crystals
    • G09G3/3611—Control of matrices with row and column drivers
    • G09G3/3614—Control of polarity reversal in general
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/136—Liquid crystal cells structurally associated with a semi-conducting layer or substrate, e.g. cells forming part of an integrated circuit
    • G02F1/1362—Active matrix addressed cells
    • G02F1/136213—Storage capacitors associated with the pixel electrode
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2201/00—Constructional arrangements not provided for in groups G02F1/00 - G02F7/00
    • G02F2201/52—RGB geometrical arrangements
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0439—Pixel structures
    • G09G2300/0452—Details of colour pixel setup, e.g. pixel composed of a red, a blue and two green components
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0469—Details of the physics of pixel operation
    • G09G2300/0478—Details of the physics of pixel operation related to liquid crystal pixels
    • G09G2300/0491—Use of a bi-refringent liquid crystal, optically controlled bi-refringence [OCB] with bend and splay states, or electrically controlled bi-refringence [ECB] for controlling the color
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2300/00—Aspects of the constitution of display devices
    • G09G2300/04—Structural and physical details of display devices
    • G09G2300/0469—Details of the physics of pixel operation
    • G09G2300/0478—Details of the physics of pixel operation related to liquid crystal pixels
    • G09G2300/0495—Use of transitions between isotropic and anisotropic phases in liquid crystals, by voltage controlled deformation of the liquid crystal molecules, as opposed to merely changing the orientation of the molecules as in, e.g. twisted-nematic [TN], vertical-aligned [VA], cholesteric, in-plane, or bi-refringent liquid crystals
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0209—Crosstalk reduction, i.e. to reduce direct or indirect influences of signals directed to a certain pixel of the displayed image on other pixels of said image, inclusive of influences affecting pixels in different frames or fields or sub-images which constitute a same image, e.g. left and right images of a stereoscopic display
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00—Control of display operating conditions
    • G09G2320/02—Improving the quality of display appearance
    • G09G2320/0271—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • G09G2320/0276—Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping for the purpose of adaptation to the characteristics of a display device, i.e. gamma correction
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00—Aspects of display data processing
    • G09G2340/06—Colour space transformation
    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed

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  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Computer Hardware Design (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)
  • Liquid Crystal (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

The present invention provides suppression power consumption and the display device of deterioration in image quality reducing display device and electronic equipment.Image display panel, include the arrangement of the pixel comprising the 1st secondary pixel, the 2nd secondary pixel, the 3rd secondary pixel and the 4th secondary pixel, i.e. periodic arrangement the 1st row comprising the 1st secondary pixel, be arranged in the 2nd row comprising the 2nd secondary pixel of the next column of the 1st row and be arranged in the arrangement of described pixel of the 3rd row of next column of the 2nd row.3rd secondary pixel of the 3rd row and the 4th secondary pixel are alternately arranged along the direction of the 3rd row, and the secondary pixel that the 3rd row adjacent on direction in the row direction in same a line of the 3rd row are to each other alternately configures the 3rd secondary pixel and the 4th secondary pixel.And, in a scan line, the secondary pixel of selectable 3rd row is connected to one of them in the 3rd secondary pixel and the 4th secondary pixel.

Description

Display device and electronic equipment
Technical field
The present invention relates to display device and possess the electronic equipment of this display device.
Background technology
In recent years, the demand of the display device of the facing mobile apparatus such as mobile phone and Electronic Paper etc. improves.At display dress In putting, a pixel possesses multiple secondary pixel, and the plurality of secondary pixel exports the light of different colours respectively, by switching this pair pixel The conducting (on) of display and turn off (off), make pixel display shades of colour.Such display device is also improving year by year So-called resolution and the display characteristic of brightness.But, along with resolution raise, aperture opening ratio decline, so to realize highlighted In the case of degree, need to improve the brightness of backlight, have the problem that the power consumption of backlight increases.In order to improve it, have conventional red Color, green, blue secondary pixel are added the technology (such as, patent documentation 1) of the 4th secondary pixel secondary pixel of i.e. white.This technology The current value of backlight is declined the quite secondary pixel of white and improves the part of brightness, reduce power consumption.
Additionally, as the type of drive of image display panel, it is known that row inversion driving mode, line inversion driving mode, point The type of drive of inversion driving mode, frame inversion driving mode etc..Row inversion driving mode is, applies voltage, and by applying The polarity of this voltage is by the type of drive of periodic reversal of regulation, so that secondary pixel or be combined with pixel adjacent of secondary pixel 1 row (column) is different for the current potential current potential each other of benchmark.Thus, compare with an inversion driving mode, it is known that row reversion driving side Discharge and recharge in the holding wire of formula is few and is low-power consumption.
[prior art literature]
[patent documentation]
[patent documentation 1] JP 2010-33014 publication
[patent documentation 2] JP 5-43118 publication
Summary of the invention
The problem that invention is to be solved
With the addition of the image display panel of the 4th secondary pixel, the area of every pixel becomes big, so there being the requirement of more high-resolution. Therefore, 3 row of the 1st secondary pixel, the 2nd secondary pixel and the 3rd secondary pixel are set to tactic configuration by display panels, and the 3rd Row are so that the 3rd secondary pixel and the 4th secondary pixel is the most alternately arranged arranges.Its result, even if adding the 4th secondary pixel, It also is able to suppress the increase of elemental area, it is possible to high-resolution.But, it is being suitable for the technology of patent documentation 2, merit will suppressed further In the case of consumption, the decline (deterioration) of the picture quality of so-called crosstalk (cross talk) may be caused.
It is an object of the invention to, it is provided that suppression power consumption and reduce display device deterioration in image quality display dress Put and electronic equipment.
The scheme of solution problem
The display device of the present invention includes: image display panel, includes the arrangement of the pixel comprising multiple secondary pixel, i.e. The 1st row that periodic arrangement comprises the 1st secondary pixel, be arranged in described 1st row next column comprise the 2 of the 2nd secondary pixel Arrange and be arranged in the arrangement of the described pixel of the 3rd row of the next column of described 2nd row；Display functional layer, has at described figure As showing the image display function of image on display floater；Holding wire, is connected to described 1st row, described 2nd row and the described 3rd Each row of row；Controlling device, based on picture signal, the voltage applying described holding wire is between adjacent described secondary pixel or phase Difference between adjacent described pixel, drives institute with the row inversion driving mode of the polarity of this voltage applied by the periodic reversal of regulation State display function；And scan line, described control device sequence selects each row of described secondary pixel.In described 3rd row, the 3rd Secondary pixel and the 4th secondary pixel alternately configure along the 3rd direction arranged, and in same a line of described 3rd row, the described 3rd Secondary pixel and the described 4th secondary pixel alternately configure, and each scan line of described scan line is connected to phase in described 3rd row One of them in the described 3rd adjacent secondary pixel and the adjacent the described 4th secondary pixel, as secondary pixel to be selected.
The electronic equipment of the present invention possesses the display device of the present invention.
Accompanying drawing explanation
Fig. 1 is the block diagram of the structure of the display device representing an example present embodiment.
Fig. 2 is the figure of the pixel arrangement of the image display panel representing present embodiment.
Fig. 3 is image display panel and the concept of picture display face drive circuit of the display device of present embodiment Figure.
Fig. 4 is by the concept map of the display device of the present embodiment reproducible reproduction HSV colour space.
Fig. 5 is the concept map representing the relation between the tone and the colourity that reproduce the HSV colour space.
Fig. 6 is the schematic diagram of the circuit pattern of the image display panel for present embodiment is described.
Fig. 7 is the VII-VII line profile of Fig. 6.
Fig. 8 is the schematic diagram of the viewing area driven with row inversion driving mode for explanation.
Fig. 9 is the schematic diagram of the viewing area driven with row inversion driving mode for explanation.
Figure 10 is with between holding wire current potential and the pixel potential of the situation of row inversion driving mode driving for explanation The schematic diagram of relation.
Figure 11 is the schematic diagram of the crosstalk produced on the image display panel of comparative example for explanation.
Figure 12 is the schematic diagram of the pixel arrangement of the image display panel representing comparative example.
Figure 13 is to become the pair picture in the case of monochrome shows for explanation in the central authorities of the image display panel of comparative example The schematic diagram of the state of element.
Figure 14 is for public in the case of the central authorities of the image display panel of comparative example become monochromatic display of explanation The schematic diagram of the waveform of the signal of electrode.
Figure 15 is the schematic diagram of the pixel arrangement of the image display panel representing present embodiment.
Figure 16 is for illustrating in the case of the central authorities of the image display panel of present embodiment become monochromatic display The schematic diagram of the state of secondary pixel.
Figure 17 is for illustrating in the case of the central authorities of the image display panel of present embodiment become monochromatic display The schematic diagram of the waveform of the signal of public electrode.
Figure 18 is image display panel and the image display panel driving of the display device of the 1st variation of present embodiment The concept map of circuit.
Figure 19 is the figure of the pixel arrangement of the image display panel of the 2nd variation representing present embodiment.
Figure 20 is the figure of the pixel arrangement of the image display panel of the 3rd variation representing present embodiment.
Figure 21 is the figure of the pixel arrangement of the image display panel of the 4th variation representing present embodiment.
Figure 22 is image display panel and the image display panel driving of the display device of the 4th variation of present embodiment The concept map of circuit.
Figure 23 is the figure of the pixel arrangement of the image display panel of the 5th variation representing present embodiment.
Figure 24 is the viewing area driven with row inversion driving mode of the 5th variation for present embodiment is described Schematic diagram.
Figure 25 is the viewing area driven with row inversion driving mode of the 5th variation for present embodiment is described Schematic diagram.
Figure 26 is the display device that touch detecting apparatus is integrated the present embodiment on described image display panel Concept map.
Figure 27 is the display device that touch detecting apparatus is installed in the present embodiment on described image display panel Concept map.
Figure 28 saying the noise of touch detecting apparatus effect that be the display device that the comparative example shown in an illustration 12 is described Bright figure.
Figure 29 is the figure of the electronic equipment of the display device representing that an example possesses present embodiment.
Figure 30 is the figure of the electronic equipment of the display device representing that an example possesses present embodiment.
Figure 31 is the figure of the electronic equipment of the display device representing that an example possesses present embodiment.
Figure 32 is the figure of the electronic equipment of the display device representing that an example possesses present embodiment.
Figure 33 is the figure of the electronic equipment of the display device representing that an example possesses present embodiment.
Figure 34 is the figure of the electronic equipment of the display device representing that an example possesses present embodiment.
Figure 35 is the figure of the electronic equipment of the display device representing that an example possesses present embodiment.
Figure 36 is the figure of the electronic equipment of the display device representing that an example possesses present embodiment.
Figure 37 is the figure of the electronic equipment of the display device representing that an example possesses present embodiment.
Figure 38 is the figure of the electronic equipment of the display device representing that an example possesses present embodiment.
Figure 39 is the figure of the electronic equipment of the display device representing that an example possesses present embodiment.
Figure 40 is the figure of the electronic equipment of the display device representing that an example possesses present embodiment.
Figure 41 is the figure of the electronic equipment of the display device representing that an example possesses present embodiment.
Label declaration
10 display devices
20 signal processing units
30 image display panels
40 picture display face drive circuits
41 signal output apparatus
42 scanning circuits
48 pixels
48A pixel
48B pixel
49 secondary pixels
The secondary pixel of 49R the 1st
The secondary pixel of 49G the 2nd
The secondary pixel of 49B the 3rd
The secondary pixel of 49W the 4th
50 surface light source apparatus
60 surface light source apparatus control circuits
Detailed description of the invention
Hereinafter, form for carry out an invention is described in detail with reference to accompanying drawings.Further, explanation is carried out in the following order.
1. the structure of display device
2. the process action of display device
3. variation
4. application examples (electronic equipment)
5. the form of the present invention
[the 1. structure of display device]
Fig. 1 is the block diagram of an example structure of the display device representing present embodiment.Fig. 2 represents present embodiment The figure of the pixel arrangement of image display panel.Fig. 3 is the image display panel of the display device of present embodiment and image shows The concept map of panel drive circuit.
As it is shown in figure 1, display device 10 includes: each unit of display device 10 is transmitted signal, the signal of control action Processing unit 20；Based on the output signal exported from signal processing unit 20, the image display panel 30 of display image；Control figure Picture display face drive circuit 40 as the driving of display floater 30；To image display panel 30 from the planar light of back lighting Source apparatus 50；And control the surface light source apparatus control circuit 60 of the driving of surface light source apparatus 50.Further, display device 10 Structure as with image display apparatus assembly described in the JP 2011-154323 publication of patent documentation being, can It is useful in JP 2011-154323 publication described various variation.
Signal processing unit 20 is the calculation process list of the action controlling image display panel 30 and surface light source apparatus 50 Unit.Signal processing unit 20 with for driving the picture display face drive circuit 40 of image display panel 30 and be used for driving The surface light source apparatus control circuit 60 of dynamic surface light source apparatus 50 is connected to.Signal processing unit 20 is defeated to input from outside Enter signal to carry out processing and generate output signal and surface light source apparatus control signal.That is, input is believed by signal processing unit 20 Number the input HSV colour space input value (input signal) conversion be generated as with the 1st color, the 2nd color, the 3rd color and the 4th face The reconstructed value (output signal) of the reproduction HSV colour space of color reproduction, exports image display panel 30 by the output signal of generation. The output signal of generation is exported picture display face drive circuit 40, and the flat light source that will generate by signal processing unit 20 Device control signal exports surface light source apparatus control circuit 60.
As shown in Figure 2 and Figure 3, in image display panel 30, pixel 48 two dimension arrange P rectangularly0×Q0Individual (row side Upwards P0Individual, Q on column direction0Individual).Example shown in Fig. 2, Fig. 3 represent arrange in the two-dimensional coordinate system of XY rectangularly many The example of individual pixel 48.In the present example, line direction is X-direction, and column direction is Y-direction.
Pixel 48 has the 1st secondary pixel 49R, the 2nd secondary pixel 49G and the 3rd secondary pixel 49B or the 4th secondary pixel 49W.The 1 secondary pixel 49R shows the 1st primary colors (such as, red).2nd secondary pixel 49G shows the 2nd primary colors (such as, green).3rd secondary pixel 49B shows the 3rd primary colors (such as, blue).4th secondary pixel 49W shows the 4th color (in particular white).Hereinafter, need not In the case of distinguishing the 1st secondary pixel 49R, the 2nd secondary pixel 49G, the 3rd secondary pixel 49B and the 4th secondary pixel 49W respectively, it is referred to as Secondary pixel 49.
More specifically, display device 10 is the color liquid crystal display arrangement of transmission-type.Image display panel 30 is colored Display panels, is configured with, between the 1st secondary pixel 49R and image-watching person, the 1st colorized optical filtering making the 1st primary colors pass through Device, is configured with, between the 2nd secondary pixel 49G and image-watching person, the 2nd chromatic filter making the 2nd primary colors pass through, at the 3rd secondary picture It is configured with, between element 49B and image-watching person, the 3rd chromatic filter making the 3rd primary colors pass through.Additionally, image display panel 30 exists Chromatic filter is not configured between 4th secondary pixel 49W and image-watching person.For the 4th secondary pixel 49W, it is also possible to replace coloured silk Color light filter and possess transparent resin bed.So, by arranging transparent resin bed, image display panel 30 is to the 4th secondary picture Element 49W is not provided with chromatic filter such that it is able to suppress to produce big rank difference in the 4th secondary pixel 49W.
In image display panel 30, it is combined with and comprises the 1st secondary pixel 49R, the 2nd secondary pixel 49G, the 3rd secondary pixel 49B or the Pixel 48A of the secondary pixel of 4 secondary pixels 49W and pixel 48B are configured by rectangular.And, in image display panel 30, such as figure Shown in 2 and Fig. 3, there is the 1st secondary pixel 49R, the 2nd secondary pixel 49G and pixel 48A of the 3rd secondary pixel 49B and there is the 1st secondary picture Pixel 48B of element 49R, the 2nd secondary pixel 49G and the 4th secondary pixel 49W in the row direction and the most alternately configures on column direction.Figure As, in display floater 30, being arranged the 2nd secondary pixel 49G that the 1st of the 1st secondary pixel 49R arranged, was arranged in the next column of the 1st row The 2nd row and be arranged in described 2nd row next column be arranged the 3rd row repeatedly arranged.In 3rd row, the 3rd secondary pixel Secondary pixel 49W of 49B and the 4th is alternately arranged in the row direction, and in the same string of the 3rd row, the 3rd secondary pixel 49B and the 4th Secondary pixel 49W is alternately arranged in a column direction.
Usually, similar in appearance to the arrangement of striped arrangement, it is suitable in middle video data or character strings such as personal computers.Relatively In this, similar in appearance to inlaying the arrangement of arrangement, it is suitable for showing natural image in video camera or digital camera etc..
Picture display face drive circuit 40 is the control device of present embodiment, possesses signal output apparatus 41 and scanning Circuit 42.Picture display face drive circuit 40 keeps video signal by signal output apparatus 41, and is sequentially output image Display floater 30.Signal output apparatus 41 is electrically connected with image display panel 30 by holding wire DTL.Image display panel drives Circuit 40, by scanning circuit 42, selects the secondary pixel in image display panel 30, and controls the action for controlling secondary pixel Switch element (such as, the thin film transistor (TFT) (TFT of (light transmittance)；Thin Film Transistor)) conducting and cut-off.Sweep Scanning circuit 42 is electrically connected with image display panel 30 by scan line SCL.
As it is shown on figure 3, be arranged the 1st row of the 1st secondary pixel 49R, be arranged in the 1st row next column be arranged the 2nd The 2nd of secondary pixel 49G arranges and is arranged in the 3rd row of the next column of the 2nd row and repeatedly arranged.In arranging the 3rd, the 3rd secondary pixel 49B (49B ') and the 4th secondary pixel 49W (49W ') it is alternately arranged in the row direction, it is possible to mend with the brightness of the 4th secondary pixel 49W Repay the bright of low the 3rd blue secondary pixel 49B of the visual sensitivity of people compared with the 1st secondary pixel 49R and the 2nd secondary pixel 49G Degree.Additionally, in same a line of the 3rd row, adjacent the 3rd row in direction in the row direction secondary pixel 49 to each other alternately configures 3rd secondary pixel 49B ' and the 4th secondary pixel 49W.Additionally, in same a line of the 3rd row, the 3rd row that direction in the row direction is adjacent Secondary pixel 49 to each other alternately configures the 3rd secondary pixel 49B and the 4th secondary pixel 49W '.Be positioned at the 3rd row same a line, the 3rd Secondary pixel 49B ' and the 4th pair pixel 49W be connected to the most different scan lines SCL.It is positioned at the 3rd same a line arranged, the 3rd secondary picture Secondary pixel 49W of element 49B and the 4th ' it is connected to the most different scan lines SCL.Its result, the 3rd row that one article of scan line SCL selects Secondary pixel 49 be the 3rd secondary pixel 49B and the 3rd secondary pixel 49B '.Or, the 3rd secondary pixel arranged that one article of scan line SCL selects 49 is the 4th secondary pixel 49W and the 4th secondary pixel 49W '.
Surface light source apparatus 50 is arranged in the back side of image display panel 30, by irradiating light to image display panel 30, Image display panel 30 is illuminated.The surface light source apparatus 50 whole the irradiation light to image display panel 30, illuminates figure As display floater 30.Surface light source apparatus control circuit 60 controls the light quantity etc. of the light from surface light source apparatus 50 output.Specifically Ground is said, surface light source apparatus control circuit 60, based on the surface light source apparatus control signal exported from signal processing unit 20, is adjusted The whole voltage to surface light source apparatus 50 supply or dutycycle, thus control to irradiate the light quantity (light of the light of image display panel 30 Intensity).Then, the process action performed about display device 10, more specifically signal processing unit 20 is described.
[the 2. process action of display device]
Fig. 4 is the concept map by the display device reproducible reproduction HSV colour space of present embodiment.Fig. 5 is to represent again The concept map of the relation between tone and the colourity of the existing HSV colour space.Signal processing unit 20 inputs figure to be shown from outside The information of picture i.e. input signal.In input signal, include for each pixel, in the information of the image (color) of this position display As input signal.Specifically, it is configured with P rectangularly0×Q0In the image display panel 30 of individual pixel 48, for (p, Q) pixel 48 (wherein, 1≤p≤P0、1≤q≤Q0), comprising signal value is x1-(p、q)The 1st secondary input signal of pixel 49R, letter Number value is for x2-(p、q)The input signal of the 2nd secondary pixel 49G and signal value be x3-(p、q)The input signal of the 3rd secondary pixel 49B The signal of (with reference to Fig. 1) is imported into signal processing unit 20.
Signal processing unit 20 shown in Fig. 1, by processing input signal, generates and is used for determining the 1st secondary pixel Output signal (the signal value X of the secondary pixel in the 1st of the display gray scale of 49R1-(p、q)), for determining the display ash of the 2nd secondary pixel 49G Output signal (the signal value X of the secondary pixel in the 2nd of degree2-(p、q)), for determining the 3rd pair picture of the display gray scale of the 3rd secondary pixel 49B Output signal (the signal value X of element3-(p、q)) and for determining the output letter of the 4th secondary pixel of the display gray scale of the 4th secondary pixel 49W Number (signal value X4-(p、q)), and export picture display face drive circuit 40.
Display device 10 exports the 4th secondary pixel 49W of the 4th color (white) by possessing to pixel 48, as shown in Figure 4, The dynamic range of the brightness in the HSV colour space (reproducing the HSV colour space) can be expanded.I.e., as shown in Figure 4, in the 1st secondary pixel The HSV colour space of the cylindrical shape that 49R, the 2nd secondary pixel 49G and the 3rd secondary pixel 49B can show, becomes that to be loaded with colourity S the highest The three-dimensional shape of the generally trapezoidal shape that the maximum of brightness V is the lowest.
Signal processing unit 20 is by adding the 4th color (white), and in the HSV colour space after will be enlarged by, colourity S is as change The maximum Vmax (S) of the brightness of amount is stored in signal processing unit 20.That is, signal processing unit 20 is for shown in Fig. 4 The three-dimensional shape of the HSV colour space, stores the value of the maximum Vmax (S) having brightness to each coordinate (value) of colourity and tone. In input signal, owing to having the 1st secondary pixel 49R, the 2nd secondary pixel 49G and the input signal of the 3rd secondary pixel 49B, so input The HSV colour space of signal becomes cylindrical shape, i.e. become the shape identical with the cylindrical portion reproducing the HSV colour space.
Then, signal processing unit 20 is at least based on input signal (the signal value x of the 1st secondary pixel 49R1-(p、q)) and extension Factor alpha, calculates output signal (the signal value X of the 1st secondary pixel 49R1-(p、q)), and export the 1st secondary pixel 49R.Additionally, signal Processing unit 20 is at least based on input signal (the signal value x of the 2nd secondary pixel 49G2-(p、q)) and spreading coefficient α, calculate the 2nd secondary picture Output signal (the signal value X of element 49G2-(p、q)), and export the 2nd secondary pixel 49G.Additionally, signal processing unit 20 at least base Input signal (signal value x in the 3rd secondary pixel 49B3-(p、q)) and spreading coefficient α, calculate the output signal of the 3rd secondary pixel 49B (signal value X3-(p、q)), and export the 3rd secondary pixel 49B.And, signal processing unit 20 input based on the 1st secondary pixel 49R Signal (signal value x1-(p、q)), input signal (the signal value x of the 2nd secondary pixel 49G2-(p、q)) and the input letter of the 3rd secondary pixel 49B Number (signal value x3-(p、q)), calculate output signal (the signal value X of the 4th secondary pixel 49W4-(p、q)), and export the 4th secondary pixel 49W。
Specifically, secondary pixel 49W of signal processing unit 20 spreading coefficient α and the 4th based on the 1st secondary pixel 49R is defeated Go out signal, calculate the output signal of the 1st secondary pixel 49R, secondary pixel 49W of spreading coefficient α and the 4th based on the 2nd secondary pixel 49G Output signal, calculates the output signal of the 2nd secondary pixel 49G, and the secondary pixel of spreading coefficient α and the 4th based on the 3rd secondary pixel 49B The output signal of 49W, calculates the output signal of the 3rd secondary pixel 49B.
That is, when χ is set to the constant depending on display device, signal processing unit 20 is according to formula (1) shown below ～formula (3) asks (p, q) pixel (or the 1st secondary pixel 49R, the 2nd secondary pixel 49G and group of the 3rd secondary pixel 49B) the 1st secondary picture The output signal i.e. signal value X of element 49R1-(p、q), the output signal i.e. signal value X of the 2nd secondary pixel 49G2-(p、q)And the 3rd secondary pixel The output signal of 49B i.e. signal value X3-(p、q)。
X1-(p、q)=α x1-(p、q)-χ·X4-(p、q) (1)
X2-(p、q)=α x2-(p、q)-χ·X4-(p、q) (2)
X3-(p、q)=α x3-(p、q)-χ·X4-(p、q) (3)
Signal processing unit 20 asks colourity S in the HSV colour space after expanding by adding the 4th color as variable The maximum Vmax (S) of brightness, input signal values based on the secondary pixel 49 in multiple pixels 48, seek these multiple pixels 48 In colourity S and brightness V (S).
Colourity S and brightness V (S) represent with S=(Max-Min)/Max and V (S)=Max.Colourity S can take the value from 0 to 1, Brightness V (S) can take the value from 0 to (2n-1).N is display gray scale bit number.Additionally, Max is in the 1st secondary pixel to pixel 48 The input signal values of the input signal values of 49R, the input signal values of the 2nd secondary pixel 49G and the 3rd secondary pixel 49B is maximum. Min is in the 1st secondary input signal values of pixel 49R, the input signal values of the 2nd secondary pixel 49G and the 3rd secondary pixel to pixel 48 The input signal values of 49B is minima.Additionally, as it is shown in figure 5, tone H is to represent from 0 ° to 360 °.From 0 ° to 360 °, For red (Red), yellow (YelloW), green (Green), aeruginous (Cyan), blue (Blue), magenta (Magenta), Red.
In the present embodiment, signal value X4-(p、q)Can be based on Min(p、q)Ask with amassing of spreading coefficient α.Specifically Say, it is possible to seek signal value X based on following formula (4)4-(p、q).In formula (4), by Min(p、q)Long-pending divided by χ with spreading coefficient α, But it is not limited to this.For χ, after discuss.Additionally, every 1 image display frame is determined spreading coefficient α.
X4-(p、q)=Min(p、q)·α/χ (4)
Usually, in (p, q) pixel, input signal (signal value x based on the 1st secondary pixel 49R1-(p、q)), the 2nd secondary Input signal (the signal value x of pixel 49G2-(p、q)) and input signal (the signal value x of the 3rd secondary pixel 49B3-(p、q)), cylinder Colourity (Saturation) S in the HSV colour space(p、q)And brightness (Brightness) V (S)(p、q)Can be according to below formula (5), formula (6) is asked.
S(p、q)=(Max(p、q)-Min(P、q))/Max(P、q) (5)
V(S)(p、q)=Max(p、q)···(6)
Wherein, Max(p、q)It is (x1-(p、q)、x2-(p、q)、x3-(p、q)The maximum of the input signal values of the secondary pixel 49 of 3 in) Value, Min(p、q)It is (x1-(p、q)、x2-(p、q)、x3-(p、q)The minima of the input signal values of the secondary pixel 49 of 3 in).In this reality Execute in mode, n=8.That is, display gray scale bit number is set to 8 bits (256 gray scales that value is 0 to 255 of display gray scale).
In the 4th secondary pixel 49W of display white, do not configure chromatic filter.Input will have in the 1st secondary pixel 49R Having the signal of the value of the maximum signal level of the output signal being equivalent to the 1st secondary pixel 49R, in the 2nd secondary pixel 49G, input has phase When the signal of value of the maximum signal level of the output signal in the 2nd secondary pixel 49G, in the 3rd secondary pixel 49B, input has and is equivalent to The group of during signal of the value of the maximum signal level of the output signal of the 3rd secondary pixel 49B, pixel 48 or pixel 48 possess the 1st The brightness of the aggregation of secondary pixel 49R, the 2nd secondary pixel 49G and the 3rd secondary pixel 49B is set to BN1-3.Additionally, imagination is in pixel 48 Or in the 4th secondary pixel 49W that possesses of the group of pixel 48, be equivalent to the output signal of the 4th secondary pixel 49W being transfused to have The 4th secondary pixel 49W during the signal of the value of big signal value is set to brightness BN4.That is, by the 1st secondary pixel 49R, the 2nd secondary pixel The white of the aggregation display high-high brightness of secondary pixel 49B of 49G and the 3rd, the brightness of this white is with BN1-3Represent.Then, by χ When being set to the constant depending on display device, constant χ is with χ=BN4/BN1-3Represent.
Specifically, as the input signal of the value with next display gray scale, at the 1st secondary pixel 49R, the 2nd secondary picture In the aggregation of secondary pixel 49B of element 49G and the 3rd, for being transfused to signal value x1-(p、q)=255, signal value x2-(p、q)=255, letter Number value x3-(p、q)The brightness BN of white when=2551-3, it is assumed that in the 4th secondary pixel 49W, it has been transfused to that there is display gray scale Value 255 input signal time brightness BN4, for example, 1.5 times.That is, in present embodiment, χ=1.5.
, at signal value X4-(p、q)By above-mentioned formula (4) provide in the case of, Vmax (S) can with following formula (7), Formula (8) represents.
S≤S0In the case of,
Vmax(S)=(χ+1)·(2n-1) (7)
S0In the case of ＜ S≤1:
Vmax(S)=(2n-1)·(1/S) (8)
Wherein, S0=1/(χ+1)。
Using that so obtain, by adding the 4th color and bright as variable of colourity S in the HSV colour space after expanding The maximum Vmax (S) of degree, such as, as a kind of inquiry table storage in signal processing unit 20.Or, every time at signal Reason unit 20 ask colourity S in the HSV colour space after will be enlarged by as the maximum Vmax (S) of the brightness of variable.
Then, illustrate to seek the output signal in (p, q) pixel 48 i.e. signal value X1-(p、q)、X2-(p、q)、X3-(p、q)、 X4-(p、q)Method (extension process).Carry out next process, to keep by (the 1st secondary pixel 49W of secondary pixel 49R+ the 4th) display The 1st primary colors brightness, shown by (the 2nd secondary pixel 49G+ the 4th secondary pixel 49W) the 2nd primary colors brightness, by (the 3rd secondary pixel Secondary pixel 49W of 49B+ the 4th) ratio of the brightness of the 3rd primary colors that shows.And, to keep (maintenance) tone to carry out.And then, with (maintenance) gray scale-light characteristic (gamma characteristic, γ characteristic) is kept to carry out.Additionally, in arbitrary pixel 48 or pixel 48 In Qun, the situation that whole input signal values is 0 or little in the case of, do not comprise such pixel 48 or the group of pixel 48 and Seek spreading coefficient α.
(the 1st step)
First, signal processing unit 20 input signal values based on the secondary pixel 49 in multiple pixels 48, ask these multiple Colourity S in pixel 48 and brightness V (S).Specifically, input letter based on the 1st secondary pixel 49R to (p, q) pixel 48 Number i.e. signal value x1-(p、q), the input signal i.e. signal value x of the 2nd secondary pixel 49G2-(p、q), the 3rd secondary pixel 49B input signal i.e. Signal value x3-(p、q), seek S according to formula (7) and formula (8)(p、q)、V(S)(p、q).Signal processing unit 20 is carried out for all pixels 48 This process.
(second step)
Then, signal processing unit 20 seeks spreading coefficient α based on the Vmax (S) tried to achieve in multiple pixels 48/V (S) (S)。
α(S)=Vmax(S)/V(S) (9)
(third step)
Then, signal processing unit 20 is at least based on signal value x1-(p、q), signal value x2-(p、q)And signal value x3-(p、q)Ask Signal value X in (p, q) pixel 484-(P、q).In present embodiment, signal processing unit 20 is based on Min(p、q), spreading coefficient α And constant χ determines signal value X4-(p、q).More specifically, as above-mentioned, signal processing unit 20 is asked based on above-mentioned formula (4) Signal value X4-(p、q).Signal processing unit 20 is at P0×Q0Individual both full-pixel 48 seeks signal value X4-(p、q)。
(the 4th step)
Then, signal processing unit 20 is based on signal value x1-(p、q), spreading coefficient α and signal value X4-(p、q)Ask (p, q) Signal value X in pixel 481-(p、q), based on signal value X2-(p、q), spreading coefficient α and signal value X4-(p、q)Seek (p, q) pixel Signal value X in 482-(p、q), based on signal value x3-(p、q), spreading coefficient α and signal value x4-(p、q)Ask in (p, q) pixel 48 Signal value X3-(p、q).Specifically, signal processing unit 20 is asked in (p, q) pixel 48 based on above-mentioned formula (1)～(3) Signal value X1-(p、q), signal value X2-(p、q)And signal value X3-(p、q)。
As shown in formula (4), signal processing unit 20 extends Min by spreading coefficient α(p、q)Value.So, Min(p、q)'s Value is expanded by spreading coefficient α, thus not only the brightness of white displays pair pixel (the 4th secondary pixel 49W) increases, Er Qieru Shown in above-mentioned formula, red display pair pixel, the secondary pixel of green display and the secondary pixel of blue display (correspond respectively to the 1st secondary pixel 49R, the 2nd secondary pixel 49G and the 3rd secondary pixel 49B) brightness also increase.Therefore, it is possible to avoid producing the problem being a bit darkish in color. That is, with do not extend Min(p、q)The situation of value compare, pass through Min(p、q)Value be expanded by spreading coefficient α, whole as image Body, brightness is α times.It is thus possible, for instance, it is possible to the image carrying out rest image etc. with high brightness shows, is suitable.
Signal value X in (p, q) pixel 481-(p、q), signal value X2-(p、q), signal value X3-(p、q)And signal value X4-(p、q) It is extended to α times.Therefore, display device 10 is in order to make the brightness of pixel 48 become the brightness of the pixel 48 with the state not extended Identical brightness, makes the brightness of surface light source apparatus 50 reduce based on spreading coefficient α.Specifically, flat light source is filled The brightness putting 50 is set to (1/ α) times.Signal processing unit 20 computing selection described later signal SELR, SELG, SELB (SELW), to export the signal value X in (p, q) pixel 481-(p、q), signal value X2-(p、q), signal value X3(p、q)And signal value X4-(p、q)。
The example of the liquid crystal indicator of ＜ lateral electric field mode >
Fig. 6 is the schematic diagram of the circuit pattern of the image display panel for present embodiment is described.Fig. 7 is Fig. 6 VII-VII line profile.As it is shown in fig. 7, image display panel 30 includes: pixel substrate 70A；With this pixel substrate 70A's Counter substrate 70B arranged opposite on the direction that surface is vertical；And insert between pixel substrate 70A and counter substrate 70B The liquid crystal layer 70C arranged.Further, on the face with liquid crystal layer 70C opposition side of pixel substrate 70A, be configured with as backlight The surface light source apparatus 50 (with reference to Fig. 1) stated.
Liquid crystal layer 70C modulates the light by it according to the state of electric field, uses and employs FFS (Fringe Field SWitching (fringing field conversion)) or the liquid of lateral electric field mode of IPS (In-Plane SWitching: coplanar conversion) etc. Brilliant liquid crystal indicator.Such as, liquid crystal layer 70C can also be TN (TWisted Nematic: twisted-nematic), VA (Vertical Alignment: vertical orientated), ECB (Electrically Controlled Birefringence: electric field Control birefringence) etc. the liquid crystal of various patterns.Further, between the liquid crystal layer 70C shown in Fig. 7 and pixel substrate 70A and liquid Between crystal layer 70C and counter substrate 70B, it is also possible to join cloth alignment films respectively.
Counter substrate 70B includes light-transmitting substrate 75 and the colour formed on a face of this light-transmitting substrate 75 Light filter 76.Such as, chromatic filter 76 comprises 4 colors having coloured red (R), green (G), blue (B), white (W) Zone.Chromatic filter 76 is such as periodically arranged in aperture portion (omitting diagram) and has coloured red (R), green (G), indigo plant The zone of color (B), in vain 4 colors of (W), is set to 1 group using the zone of 4 colors of R, G, B, W in each pixel and is correlated with as pixel Connection.Chromatic filter 76 is on the direction vertical with TFT substrate 71, opposed with liquid crystal layer 70C.If further, colouring different Color, chromatic filter 76 can also be the combination of other color.Usually, in chromatic filter 76, the zone of green (G) Brightness higher than the zone of red (R) and the brightness of the zone of blueness (B).Further, black matrix (black can also be formed Matrix) to cover the periphery of pixel.By being arranged on the border between the secondary pixel of two-dimensional arrangement and secondary pixel, this black matrix For lattice shape.And, black matrix is formed by the material that the absorbance of light is high.Further, in the present embodiment, glass substrate is used As light-transmitting substrate 75, but it is not limited to this.As light-transmitting substrate 75, it is possible to use plastic base etc. replace glass base Plate.
Pixel substrate 70A includes: as the TFT substrate 71 of circuit substrate；This TFT substrate 71 joins cloth rectangularly Multiple pixel electrodes 72；The public electrode COML formed between TFT substrate 71 and pixel electrode 72；And by pixel electrode 72 Insulating barrier 74 with public electrode COML insulation.Public electrode COML is by indium tin oxide (Indium Tin Oxide:ITO) Deng the optically transparent electrode that formed of transparent conductive material (transparent conductive oxide).Further, in the present embodiment, as The example of transparent conductive material lists ITO, but is not limited to this.As transparent conductive material, it is possible to use have The conductive material of other compositions of indium-zinc oxide (Indium Zinc Oxide:IZO) etc..
In TFT substrate 71, define the semiconductor layer 92 of the thin film transistor (TFT) Tr of above-mentioned each secondary pixel, to each pixel electricity Pole 72 supply picture element signal holding wire DTL, drive thin film transistor (TFT) Tr being routed through insulating barrier 74 of scan line SCL etc. and It is stacked.Therefore, in public electrode COML, holding wire DTL and coupling electric capacity C generation effect.Further, in present embodiment In, the switch element as pixel electrode 72 uses TFT, but is not limited to this.Switch element as pixel electrode 72, it is possible to To use the elements such as thin film diode (Thin Film Diode) to replace TFT.
Holding wire DTL extends in the plane parallel with the surface of TFT substrate 71, to pixel supply for showing image Picture element signal.A part for semiconductor layer 92 is connected with holding wire DTL, another part with on the layer identical with holding wire DTL Pedestal wiring 90 connection formed.In the present invention, scan line SCL is metal line that is the 1st metal line of aluminum etc., holding wire DTL is metal line that is the 2nd metal line of aluminum etc., and pedestal wiring 90 is metal line that is the 3rd metal line of aluminum etc..Insulation Layer 74 by except the part of the contact between scan line SCL and semiconductor layer 92 or holding wire DTL and semiconductor layer 92 indirectly SI semi-insulation outside the part i.e. contact site 25a touched and contact site 90a (contact hole).
Semiconductor layer 92, holding wire DTL and scan line SCL are formed at the direction (Z on the surface being perpendicular to TFT substrate 71 Direction) on different layers on.Holding wire DTL, pedestal wiring 90 is formed at (the Z side, direction on the surface being perpendicular to TFT substrate 71 To) on identical layer on.
The contact site 25a of holding wire DTL is connected in semiconductor layer 92, the source electrode of thin film transistor (TFT) Tr or the one of drain electrode On individual.Additionally, semiconductor layer 92 is connected with pixel electrode 72 by pedestal wiring 90.The contact site 90a of pedestal wiring 90 connects On another of in semiconductor layer 92, the source electrode of thin film transistor (TFT) Tr or drain electrode.As it is shown on figure 3, scan line SCL is connected to On grid in semiconductor layer 92, thin film transistor (TFT) Tr.
Here, as above-mentioned, scan line SCL and holding wire DTL are the metal lines of wire, with in side substantially orthogonal to each other Report to the leadship after accomplishing a task to solid and configure.As shown in Figure 6, pedestal wiring 90 in z-direction, is arranged in the 1st (the X side, direction along scan line SCL To) and the edge part of the 2nd direction (Y-direction) area encompassed along holding wire DTL.
Image display panel 30 shown in Fig. 6, present embodiment, with TFT substrate 71, scan line SCL, semiconductor layer 92, holding wire DTL, public electrode COML, the order of pixel electrode 72, in z-direction lamination.Additionally, the figure of present embodiment As display floater 30 is, semiconductor layer 92 is arranged in the bottom gate in the plane between Z-direction upper tracer SCL and holding wire DTL (bottom gate) structure.Further, the thin film transistor (TFT) Tr of present embodiment is to be connected to the grid of thin film transistor (TFT) Tr Scan line SCL is arranged in the bottom grating structure of the lower section of semiconductor layer 92, but the structure of thin film transistor (TFT) Tr is not limited to this.This is thin Film transistor Tr can also be grid and scan line SCL electrically connecting this grid is arranged in the top-gated of top of semiconductor layer 92 (top gate) structure.
＜ row inversion driving mode >
Type of drive as display panels, it is known that row inversion driving mode, line inversion driving mode, some reversion are driven The type of drive of flowing mode, frame inversion driving mode etc..Row inversion driving mode is, secondary pixel or be combined with the pixel of secondary pixel 1 adjacent row (column) be applied in voltage mutually opposite polarity, by apply this voltage polarity by specify periodic reversal Type of drive.Thus, compare with an inversion driving mode, the charge and discharge in holding wire of the type of drive of row inversion driving mode The fact that electricity is low-power consumption less known.Signal processing unit 20 is applicable described in JP 5-43118 publication Various circuit.
Fig. 8 and Fig. 9 is the schematic diagram of the viewing area driven with row inversion driving mode for explanation.Figure 10 is for saying The schematic diagram of relation between holding wire current potential and the pixel potential of bright situation about driving with row inversion driving mode.Such as, right The line direction corresponding with the 1st secondary pixel 49R, the 2nd secondary pixel 49G and the 3rd secondary pixel 49B (the 4th secondary pixel 49W) each Secondary pixel, such as using the current potential of public electrode as in the case of reference potential, with relative to reference potential as high potential (with Be referred to as down (+) polarity.) and be electronegative potential (hereinafter referred to as negative (-) polarity relative to reference potential.), Fig. 8 institute the most repeatedly The state of applying state PCeven shown in applying state PCodd shown and Fig. 9.In the present embodiment, reference potential is made For the current potential of public electrode, but reference potential is not limited to the current potential of public electrode, as long as the current potential of regulation.So, Row inversion driving mode applies voltage, by the polarity of this voltage of applying by the periodic reversal of regulation, so that the phase of secondary pixel 49 1 adjacent row (column) is different current potentials each other relative to the current potential of benchmark.And, adjacent holding wire is applied in different from each other Voltage (such as antipolarity), the polarity of this voltage of applying by regulation periodic reversal.
As shown in Figure 10, applying state PCeven shown in period Fodd and Fig. 9 of applying state PCodd shown in Fig. 8 The period Feven of state, by address period Fg be boundary the most repeatedly.Figure 11 is the picture display face for comparative example is described The schematic diagram of the crosstalk produced on plate.Figure 12 is the schematic diagram of the pixel arrangement of the image display panel representing comparative example.Figure 13 It it is the state for the secondary pixel in the case of the central authorities of the image display panel of comparative example have carried out monochromatic display is described Schematic diagram.Figure 14 is for public in the case of the central authorities of the image display panel of comparative example have carried out monochromatic display of explanation The schematic diagram of the waveform of the signal of electrode.Here, as shown in figure 11, in image display panel 30, show in central authorities and only light The video in window 30W of the 3rd secondary pixel 49B.And, in image display panel 30, in the both sides of video in window 30W, such as, make 1 secondary pixel 49R, the 2nd secondary pixel 49G and the 3rd secondary pixel 49B are lighted, and will show redness (R), green (G) and blue (B) The Neutral colour display 30C in neutral gray region etc. of the numerical value of the respective color sensation color sensation with identical numerical value show.Such as figure Shown in 10, the polarity inversion cycle of pixel potential and the polarity inversion cycle of holding wire current potential and period Fodd or period Feven Basically identical.
As shown in figure 12, in the image display panel of comparative example, be positioned at the 3rd row same a line, the 3rd secondary pixel 49B and 4th secondary pixel 49W is connected to identical scan line SCL.Such as, as shown in FIG. 12 and 13, when scanning circuit 42 is in scan line SCL selects in the case of GateN+1, secondary pixel 49B of SigBeven just have (+) current potential of polarity, selected last time Secondary pixel 49W of epimere is that therefore black display is set as 0V, is to increase (just) as the change of voltage.The pair of SigBodd Pixel 49W be black display therefore for 0V, secondary pixel 49B of the epimere selected last time be negative (-) current potential of polarity, so making It is to increase (just) for the change of voltage.
As above-mentioned, in public electrode COML, holding wire DTL and coupling electric capacity C generation effect.Then, as shown in figure 14, Pulled by secondary pixel 49B of SigBeven and the increase of the change of secondary pixel 49W of SigBodd, i.e. voltage, public electrode COML produces the change of current potential increasing on direction.Here, until secondary pixel 49B selection signal SELB period at the end of Till Toff, in the case of the voltage VcomQ of crosstalk components does not restrains, voltage difference GQ is by the active voltage of the 4th secondary pixel 49W Increase, it is possible in Neutral colour display 30C, find the image originally not produced.Further, the change of the brightness of the 4th secondary pixel 49W Dynamic have, compared with the variation of the brightness of other secondary pixel 49, the tendency easily produced a very large impact.
Additionally, be applied in voltage mutually opposite polarity at adjacent holding wire DTL, applied by the periodic reversal of regulation This voltage polarity in the case of, public electrode COML produces the change of current potential on direction increasing.Further, picture display face Plate 30 is according to selecting signal SELR, SELG, and secondary pixel 49R, 49G light, even if by magenta, indigo plant together with secondary pixel 49B In the case of green such color shows on video in window 30W, in the situation that the voltage VcomQ of crosstalk components does not restrains Under, the active voltage of the 4th secondary pixel 49W is also increased by voltage difference GQ, it is possible to find originally not produce in Neutral colour display 30C Raw image.
Figure 15 is the schematic diagram of the pixel arrangement of the image display panel representing present embodiment.Figure 16 is to exist for explanation The central authorities of the image display panel of present embodiment have carried out the schematic diagram of the state of the secondary pixel in the case of monochromatic display.Figure 17 is for the public electrode in the case of the central authorities of the image display panel of present embodiment have carried out monochromatic display is described The schematic diagram of waveform of signal.
Shown in Figure 15, in the image display panel 30 of present embodiment, it is positioned at the 3rd same a line arranged, the 3rd secondary pixel Secondary pixel 49W of 49B and the 4th is free of attachment to identical scan line SCL, such as, in scan line SCL on GateN, be connected to the 4th secondary Pixel 49W and the 4th secondary pixel 49W '.So, in scan line SCL, secondary pixel 49W in the 4th of two alternatively adjacent row and 4th secondary pixel 49W '.Signal processing unit 20 by that select with GateN in scan line SCL, compare the 1st secondary pixel 49R, the 2nd The stagger picture signal of 1 horizontal pixel of secondary pixel 49G, the 4th secondary pixel 49W exports the 4th secondary pixel 49W '.Similarly, sweeping Retouch GateN+1 in line SCL and be connected to the 3rd secondary pixel 49B and the 3rd secondary pixel 49B '.So, in scan line SCL, alternatively Secondary pixel 49B in the 3rd of two adjacent row and the 3rd secondary pixel 49B '.Signal processing unit 20 will be with GateN+ in scan line SCL 1 select, secondary pixel 49R of comparing the 1st, the 2nd secondary pixel 49G, the 3rd secondary pixel 49B stagger the picture signal output of 1 horizontal pixel To the 3rd secondary pixel 49B '.
Such as, as shown in Figure 15 and Figure 16, select in scan line SCL in the case of GateN+1 at scanning circuit 42, 3rd secondary pixel 49B of SigBeven just have (+) current potential of polarity, secondary pixel 49W in the 4th of the epimere selected last time is black Color shows and is therefore set as 0V, is to increase (just) as the change of voltage.3rd secondary pixel 49B of SigBodd ' be negative (-) pole Property current potential, the 4th secondary pixel 49W of the epimere selected last time ' be that therefore black display is set as 0V, as the change of voltage And be to reduce (bearing).Then, as shown in figure 17, secondary pixel 49B of SigBeven and secondary pixel 49B of SigBodd ' change press Positive and negative cancelling out each other, the change of the current potential of public electrode COML is suppressed.
As described above, in one article of scan line SCL, the secondary pixel 49 of selectable 3rd row is the 3rd secondary pixel 49B and the 3rd Secondary pixel 49B '.Additionally, the secondary pixel 49 of selectable 3rd row is the 4th secondary pixel 49W in the one of next line article of scan line SCL And the 4th secondary pixel 49W '.According to this structure, on public electrode COML, though holding wire DTL and coupling electric capacity C generation effect, Increase and the minimizing of coupling electric capacity also cancel each other.Its result, in display device 10, even if signal processing unit 20 is by holding wire DTL carries out row reversion and drives, and the change of the current potential of public electrode COML is also suppressed.
As shown in figure 17, during the display of secondary pixel 49B selects SELB at the end of till Toff, the electricity of crosstalk components Pressure VcomQ restrains always, it is possible to suppression finds the probability of the image originally not produced in Neutral colour display 30C.Its As a result, according to the display with or without video in window 30W, the change of effective current potential of every 1 frame of pixel potential also diminishes.So, exist In the case of being driven by row inversion driving mode, the display device 10 of present embodiment can be according to or without video in window 30W's Show and suppress the change of effective current potential of every 1 frame of pixel potential.And, display device 10 is compared a reversion and drives, enter The method that ranks reversion drives, it is possible to suppression power consumption.Further, the image display panel 30 of present embodiment is according to selecting signal SELR, SELG, secondary pixel 49R and secondary pixel 49G are lighted, even if showing magenta in video in window 30W together with secondary pixel 49B In the case of the such color of color, aeruginous, the voltage VcomQ of crosstalk components is also suppressed, and finds in Neutral colour display 30C The probability of the original image not produced reduces.
＜ effect >
As described above, display device 10 can the red, green, blue 1st secondary pixel 49R, the 2nd secondary pixel 49G, 3rd secondary pixel 49B and the 3rd secondary pixel 49B ' in add the 4th secondary pixel 49W and the 4th secondary pixel 49W ' i.e. white pair pixel.Cause This, the current value of backlight declines and is equivalent to the part that the secondary pixel of white makes brightness improve, and reduces power consumption.Additionally, display device 10 Carry out the driving under row inversion driving mode.Therefore, the discharge and recharge of every holding wire DTL is suppressed, and power consumption reduces further.
Image display panel 30 is set to 3 row orders of the 1st secondary pixel 49R, the 2nd secondary pixel 49G and the 3rd secondary pixel 49B The configuration of ground arrangement, the 3rd row are set to the 3rd secondary pixel 49B and the 4th secondary pixel 49W is alternately arranged in the row direction.Its result, Even if adding the 4th secondary pixel 49W also to be able to suppress elemental area, it is possible to high-resolution.Additionally, in display device 10, by letter Number processing unit 20 carries out the driving under row inversion driving mode, is applied in mutually opposite polarity in adjacent holding wire DTL Voltage, make applying this voltage polarity by regulation periodic reversal.Thereby, it is possible to suppression power consumption.And, display device 10 Can suppress to be referred to as the decline (deterioration) of the picture quality of crosstalk.
[3. variation]
(the 1st variation)
Figure 18 is image display panel and the image display panel driving of the display device of the 1st variation of present embodiment The concept map of circuit.The display device of the 1st variation of present embodiment, is clipping pixel 48A being positioned at the 3rd row gone together mutually And under pixel 48B, secondary pixel 49R ', secondary pixel 49G ', secondary pixel 49B ', secondary pixel 49R, secondary pixel 49G, secondary pixel 49B even Scan line SCL connect and secondary pixel 49R ', secondary pixel 49G ', secondary pixel 49W ', secondary pixel 49R, secondary pixel 49G, secondary pixel 49W Scan line SCL connected is alternately arranged.In same a line of the 3rd row, the 3rd row adjacent on direction in the row direction are to each other Secondary pixel 49 alternately configure the 3rd secondary pixel 49B ' and the 4th secondary pixel 49W.Additionally, in same a line of the 3rd row, along row side To direction on adjacent 3rd row secondary pixel 49 to each other alternately configure the 3rd secondary pixel 49B and the 4th pair pixel 49W '.Position In the 3rd row same a line, the 3rd secondary pixel 49B ' and the 4th pair pixel 49W be alternately connected to the most different scan lines SCL. Be positioned at the 3rd row same a line, the 3rd secondary pixel 49B and the 4th secondary pixel 49W ' be alternately connected to the most different scan lines SCL.Its result, the secondary pixel 49 of the 3rd row of one article of scan line SCL selection is the 3rd secondary pixel 49B and the 3rd secondary pixel 49B '.Or Person, the secondary pixel 49 of the 3rd row of one article of scan line SCL selection is the 4th secondary pixel 49W and the 4th secondary pixel 49W '.Present embodiment The display device of the 1st variation can be in the red, green, blue 1st secondary pixel 49R, the 1st secondary pixel 49R ', the 2nd secondary picture Element 49G, the 2nd secondary pixel 49G ', the 3rd secondary pixel 49B, the 3rd secondary pixel 49B ' are added white secondary pixel 49W of secondary pixel that is the 4th, 4th secondary pixel 49W '.Therefore, the current value of backlight declines and is equivalent to the part that the secondary pixel of white makes brightness improve, and reduces power consumption. Additionally, display device 10 carries out the driving under row inversion driving mode.Therefore, the discharge and recharge of every holding wire DTL is suppressed, power consumption Reduce further.
Image display panel 30 be set to by the 1st secondary pixel 49R, the 2nd secondary pixel 49G and 3 row of the 3rd secondary pixel 49B, the 1st Secondary pixel 49R ', the 2nd secondary pixel 49G ' and the 3rd secondary pixel 49B ' the configuration that sequentially arranges of 3 row, the 3rd row are set to the 3rd secondary picture Secondary pixel 49W of element 49B and the 4th ' be alternately arranged along the direction of column direction, the 3rd secondary pixel 49B ' and the 4th secondary pixel 49W It is being alternately arranged along the direction of column direction.Its result, even if adding the 4th secondary pixel 49W and the 4th secondary pixel 49W ' it also is able to Suppression elemental area, it is possible to high-resolution.Additionally, in display device 10, carry out row reversion by signal processing unit 20 and drive Driving under mode, is applied in voltage mutually opposite polarity in adjacent holding wire DTL, makes the polarity of this voltage of applying Periodic reversal by regulation.Thereby, it is possible to suppression power consumption.And, display device 10 can suppress to be referred to as the figure picture element of crosstalk The decline (deterioration) of amount.
(the 2nd variation)
Figure 19 is the figure of the pixel arrangement of the image display panel of the 2nd variation representing present embodiment.Image shows In pixel 48A of panel 30 and pixel 48B, it is arranged the 1st row of the 1st secondary pixel 49W of white, is arranged under the 1st row The 2nd of the 2nd secondary pixel 49G being arranged green of string arranges and is arranged in the 3rd between described 1st row with described 2nd row Row are arranged repeatedly.In 3rd row, the 4th secondary pixel 49R of secondary pixel 49B in blue the 3rd and redness is the most alternately arranged Row, and in the same string of the 3rd row, the 3rd secondary pixel 49B and the 4th secondary pixel 49R are alternately arranged in a column direction.Pass through Such arrangement, the brightness of secondary pixel 49W in the 1st of white uprises, it is possible to become brighter image display panel.
(the 3rd variation)
Figure 20 is the figure of the pixel arrangement of the image display panel of the 3rd variation representing present embodiment.Image shows In pixel 48A of panel 30 and pixel 48B, it is arranged the 1st row of the red 1st secondary pixel 49R, is arranged in the 1st next arranged 3rd row of the 2nd next column arranging and being arranged in the 2nd row of the 2nd secondary pixel 49G being arranged green of row are arranged repeatedly. In 3rd row, the 4th secondary pixel 49Y of secondary pixel 49B in blue the 3rd and yellow is alternately arranged in the row direction, and the 3rd In the same string of row, the 3rd secondary pixel 49B and the 4th secondary pixel 49Y are alternately arranged in a column direction.In 4th secondary pixel 49Y, example As the chromatic filter of yellow is arranged between image-watching person.By such arrangement, it is possible to become in color representation Width on broader image display panel.
(the 4th variation)
Figure 21 is the figure of the pixel arrangement of the image display panel of the 4th variation representing present embodiment.Figure 22 is this The image display panel of the display device of the 4th variation of embodiment and the concept map of picture display face drive circuit.Figure In pixel 48A of picture display floater 30 and pixel 48B, the 1st of the 1st secondary pixel 49R comprising redness arranges, is arranged in the 1st row Next column the 2nd row and be arranged in the 2nd row next column the 3rd row by repeatedly, be periodically arranged.In 3rd row, blue 4th secondary pixel 49W of secondary pixel 49B in the 3rd of color and white is alternately arranged in the row direction, and at the same string of the 3rd row In, the 3rd secondary pixel 49B and the 4th secondary pixel 49W the most alternately configure.In 2nd row, secondary pixel 49G in green the 2nd And the 5th secondary pixel 49Y of yellow the most alternately configures, and in the same string of the 2nd row, the 2nd secondary pixel 49G and 5th secondary pixel 49Y is alternately arranged in a column direction.In 5th secondary pixel 49Y, such as, the chromatic filter of yellow is arranged in Between image-watching person.By such arrangement, it is possible to become broader image display panel on the width of color representation.
In the display device of the 4th variation of present embodiment, it is positioned at the 3rd secondary pixel 49B of same a line of the 3rd row ' It is alternately connected to the most different scan lines SCL with the 4th secondary pixel 49W.It is positioned at the 3rd secondary pixel 49B of same a line of the 3rd row With the 4th secondary pixel 49W ' it is alternately connected to the most different scan lines SCL.Its result, the 3rd of one article of scan line SCL selection The secondary pixel 49 of row is the 3rd secondary pixel 49B and the 3rd secondary pixel 49B '.Or, the 3rd pair picture arranged that one article of scan line SCL selects Element 49 is the 4th secondary pixel 49W and the 4th secondary pixel 49W '.It is positioned at the 2nd secondary pixel 49G of same a line of the 2nd row ' and the 5th secondary pixel 49Y is alternately connected to the most different scan lines SCL.It is positioned at the 2nd secondary pixel 49G and the 5th secondary pixel of same a line of the 2nd row 49Y ' is alternately connected to the most different scan lines SCL.Its result, the 2nd secondary pixel 49 arranged that one article of scan line SCL selects It is the 2nd secondary pixel 49G and the 2nd secondary pixel 49G '.Or, the secondary pixel 49 of the 2nd row of one article of scan line SCL selection is the 5th pair Pixel 49Y and the 5th secondary pixel 49Y '.The display device of the 4th variation of present embodiment can be red, green, blue 1st secondary pixel 49R, the 2nd secondary pixel 49G, the 2nd secondary pixel 49G add white in ', the 3rd secondary pixel 49B, the 3rd secondary pixel 49B ' Secondary pixel 49W of secondary pixel that is the 4th, the 4th secondary pixel 49W '.Therefore, the current value decline of backlight is equivalent to the secondary pixel of white make The part that brightness improves, reduces power consumption.Additionally, the display device of the 4th variation of present embodiment can red, green, Secondary pixel 49R in blue the 1st, the 2nd secondary pixel 49G, the 2nd secondary pixel 49G add in ', the 3rd secondary pixel 49B, the 3rd secondary pixel 49B ' Add secondary pixel 49Y of yellow pixel that is the 5th, the 5th secondary pixel 49Y '.By such arrangement, it is possible to become the width in color representation Broader image display panel on degree.Additionally, display device 10 carries out the driving under row inversion driving mode.Therefore, every signal The discharge and recharge of line DTL is suppressed, and power consumption reduces further.
Image display panel 30 be set to by the 1st secondary pixel 49R, the 2nd secondary pixel 49G and 3 row of the 3rd secondary pixel 49B, the 1st The 3 of secondary pixel 49R, the 2nd secondary pixel 49G ' and the 3rd secondary pixel 49B ' arrange the configuration of sequentially periodic arrangement.Its result, even if Add the 4th secondary pixel 49W, the 4th secondary pixel 49W ', the 5th secondary pixel 49Y and the 5th secondary pixel 49Y ', it is also possible to suppression pixel faces Long-pending, it is possible to become high-resolution and display floater wide on the width of color representation.Additionally, in display device 10, pass through Signal processing unit 20 carries out the driving under row inversion driving mode, thus is applied in phase each other in adjacent holding wire DTL The voltage of reversed polarity, makes the polarity of this voltage of applying by the periodic reversal of regulation.Thereby, it is possible to suppression power consumption.And, display Device 10 can suppress to be referred to as the decline (deterioration) of the picture quality of crosstalk.
(the 5th variation)
Figure 23 is the figure of the pixel arrangement of the image display panel of the 5th variation representing present embodiment.Figure 24 is to use Schematic diagram in the viewing area driven with row inversion driving mode of the 5th variation that present embodiment is described.Figure 25 is to use Schematic diagram in the viewing area driven with row inversion driving mode of the 5th variation that present embodiment is described.Image shows In pixel 48A of panel 30 and pixel 48B, the 4th of the 5th secondary pixel 49R comprising redness arranges, is arranged in the 4th next arranged The 1st of the 2nd secondary pixel 49G comprising green of row arranges, is arranged in the 2nd secondary pixel comprising blueness of the next column of the 1st row 49B the 2nd row and be arranged in the 2nd row next column the 3rd row by repeatedly, be periodically arranged.In 3rd row, the of yellow 4th secondary pixel 49W of 3 secondary pixels 49Y and white is alternately arranged in the row direction, and in the same string of the 3rd row, the 3rd Secondary pixel 49Y and the 4th secondary pixel 49W are alternately arranged in a column direction.In 3rd secondary pixel 49Y, such as by the colored filter of yellow Light device is arranged between image-watching person.By such arrangement, it is possible to become broader figure on the width of color representation As display floater.
Figure 24 and Figure 25 is the display driven with row inversion driving mode of the 5th variation for present embodiment is described The schematic diagram in region.Such as, with pixel 48A of the line direction corresponding to each 1st row to the 4th row and pixel 48B for just (+) pole Property and negative (-) current potential of polarity, applying state PCodd shown in Figure 24 and the applying state shown in Figure 25 the most repeatedly The state of PCeven.And, pixel 48A and pixel 48B are alternately arranged becomes 1 row, and 1 row of adjacent pixel 48 are applied in that The voltage of this opposite polarity, the polarity of this voltage of applying is by the periodic reversal by regulation.So, at row inversion driving mode In, apply voltage, and by the polarity of this voltage that applies by the periodic reversal of regulation, so that being combined with the pixel of pair pixel 49 1 adjacent row (column) is different for the current potential current potential each other of benchmark.
Image display panel 30 is by the 5th secondary pixel 49R, the 1st secondary pixel 49G, the 2nd secondary pixel 49B and the 3rd secondary pixel 49Y 4 row be set to the configuration that sequentially arranges, in the 3rd row, the 3rd secondary pixel 49Y and the 4th secondary pixel 49W are in the row direction with alternately Ground arrangement is arranged.Its result, also is able to suppress elemental area even if adding the 4th secondary pixel 49W, it is possible to high-resolution.Additionally, In display device 10, signal processing unit 20 is driven by row inversion driving mode, thus in adjacent pixel 48A and pixel 48B is applied in voltage mutually opposite polarity, by the polarity of this voltage of applying by the periodic reversal of regulation.Thereby, it is possible to Suppression power consumption.And, display device 10 can suppress to be referred to as the decline (deterioration) of the picture quality of crosstalk.
(possessing the display device of touch detecting apparatus)
Figure 26 is the display device that touch detecting apparatus is integrated the present embodiment on described image display panel Concept map.As shown in figure 26, display device 10 possesses: pixel substrate 2；Direction on the surface being perpendicular to this pixel substrate 2 Upper counter substrate 3 arranged opposite；And between pixel substrate 2 and counter substrate 3, insert the liquid crystal layer 70C of setting.
Liquid crystal layer 70C modulates the light by it according to the state of electric field, such as, uses the horizontal stroke employing FFS or IPS etc. Liquid crystal indicator to the liquid crystal of electric field patterns.Further, between the liquid crystal layer 70C shown in Figure 26 and pixel substrate 2 and Between liquid crystal layer 70C and counter substrate 3, it is also possible to join cloth alignment films respectively.
Additionally, counter substrate 3 includes: light-transmitting substrate 75；And formation on a face of this light-transmitting substrate 75 Chromatic filter 76.In another face of light-transmitting substrate 75, the detecting electrode forming touch detecting apparatus 1 i.e. touches detection Electrode TDL, and, on this touch detecting electrode TDL, join cloth Polarizer 78.
Pixel substrate 2 includes: as the TFT substrate 71 of circuit substrate；Rectangular in this TFT substrate 71 join the multiple of cloth Pixel electrode 72；The multiple public electrode COML formed between TFT substrate 71 and pixel electrode 72；And by pixel electrode 72 Insulating barrier 74 with public electrode COML insulation.Public electrode COML in being perpendicular to the vertical direction on surface of TFT substrate 71, Opposed with pixel electrode 72.Thus, touch detecting apparatus by arrange in counter substrate 3, public electrode COML and touches detection Electrode TDL is constituted.Touch detecting electrode TDL by the direction that the bearing of trend with the electrode pattern of public electrode COML intersects The electrode pattern of the striated extended is constituted.And, touch detecting electrode TDL and be perpendicular to surface vertical of TFT substrate 71 Direction on, opposed with public electrode COML.The each electrode pattern touching detecting electrode TDL is connected respectively to touch detection unit The input of (omitting diagram).Because of public electrode COML and touch detecting electrode TDL, electrode pattern intersected with each other intersects at it Part produces electrostatic capacitance.
According to this structure, touch detecting apparatus 1 is when carrying out the touch detection action detecting object that will be close, and image shows Show that panel drive circuit 40 drives public electrode COML as controlling device, with to every piece of time-division ground wire sequential scan.Thus, sweep The 1 detection block retouching public electrode COML on direction is sequentially selected.And, at finger as to be contacted by close object In the state (contact condition) of (or close), make public electrode COML and touch as electrostatic capacitance C2 formed by finger The electrostatic capacitance change of the cross section effect of detecting electrode TDL.Touch detecting apparatus 1 will change after electrostatic capacitance from touch Detecting electrode TDL is as touching detection signal output.In touch detecting apparatus 1, so carry out the touch detection of every 1 detection block.
Figure 27 is the display device of the present embodiment being mounted with touch detecting apparatus on described image display panel Concept map.The element identical with the element that described above is crossed is added identical label and the repetitive description thereof will be omitted. Display device 10, except possessing public electrode COML, is also equipped with drive electrode COMLt.Therefore, public electrode COML only has work For the function of the public electrode of display device 10, drive electrode COMLt has the drive electrode as touch detecting apparatus 1A Function.Display device 10 is the device of the touch detecting apparatus 1A being mounted with capacitance type on image display panel.
Figure 28 saying the noise of touch detecting apparatus effect that be the display device that the comparative example shown in an illustration 12 is described Bright figure.The longitudinal axis shown in Figure 28 represents on image display panel, is mounted with the touch detection of the capacitance type shown in Figure 27 In the case of device 1A, the example of voltage (V) between the peak value of the panel surface noise to touching detecting electrode TDL effect.Figure 28 Shown blue expression only lights secondary pixel 49B, to the electrostatic capacitance touching detecting electrode TDL effect.Similarly, shown in Figure 28 Red expression only light secondary pixel 49R, to the electrostatic capacitance touching detecting electrode TDL effect.Green expression shown in Figure 28 Only light secondary pixel 49G, to the electrostatic capacitance touching detecting electrode TDL effect.White shown in Figure 28 represents only lights secondary picture Element 49W, to the electrostatic capacitance touching detecting electrode TDL effect.
Blueness shown in Figure 28 and white are bigger than red and green noise.This is considered the current potential example of public electrode COML Fluctuate such as the impact because of the voltage VcomQ of the crosstalk components shown in above-mentioned Figure 14, thus noise can increase.As above-mentioned, this reality Executing the image display panel 30 of mode, the current potential of public electrode COML is stable, to the electrostatic capacitance touching detecting electrode TDL effect Reduce.Its result, the display device 10 of present embodiment can reduce the noise to touch detecting apparatus 1A effect.
[4. application examples]
As the application examples of the present invention, illustrate to be applicable to above-mentioned display device 10 example of electronic equipment.
Figure 29 to Figure 41 is the figure of the electronic equipment of the display device representing that an example has possessed present embodiment.Display device 10 mobile terminal apparatus being applicable to TV set device, digital camera, notebook personal computer, mobile phone etc. or take the photograph The electronic equipment of all spectra of camera etc..In other words, display device 10 be applicable to the video signal inputted from outside or Electronic equipment at all spectra that the video signal being internally generated shows as image or video.
(application examples 1)
Electronic equipment shown in Figure 29 is the TV set device being suitable for display device 10.This TV set device such as has bag Include the video display picture unit 510 of front panel 511 and filter glass 512, on this video display picture unit 510, be suitable for Display device 10.That is, the picture of this TV set device is in addition to the function of display image, it is also possible to has detection and touches dynamic Work energy.
(application examples 2)
Electronic equipment shown in Figure 30 and Figure 31 is the digital camera being suitable for display device 10.This digital camera such as has Luminescence unit 521, display unit 522, menu switch 523 and the shutter release button 524 of flash of light, on display unit 522, is suitable for Display device 10.Therefore, the display unit 522 of this digital camera is in addition to the function of display image, it is also possible to have inspection Survey the function of touch action.
(application examples 3)
Electronic equipment shown in Figure 32 is the electronic equipment of the profile being suitable for the video camera representing display device 10.This shooting Machine such as have body 531, the side, front of this body 531 arrange subject photography camera lens 532, photography time Beginning/shutdown switch 533 and display unit 534.And, on display unit 534, it is suitable for display device 10.Therefore, should The display unit 534 of video camera is in addition to the function of display image, it is also possible to have the function of detection touch action.
(application examples 4)
Electronic equipment shown in Figure 33 is the notebook personal computer being suitable for display device 10.This notebook type individual Computer such as have body 541, for character etc. input operation keyboard 542 and display image display unit 543.Aobvious Show that unit 543 has been suitable for display device 10.Therefore, the display unit 543 of this notebook personal computer is except display image Function outside, it is also possible to have detection touch action function.
(application examples 5)
Electronic equipment shown in Figure 34 to Figure 40 is the mobile phone being suitable for display device 10.This mobile phone, e.g. Mobile phone upside casing 551 and downside casing 552 connect with attachment (hinge) 553, has display 554, pair Display 555, flash lamp 556 and photographing unit 557.This display 554 is provided with display device 10.Therefore, this mobile phone Display 554 is in addition to the function of display image, it is also possible to have the function of detection touch action.
(application examples 6)
Electronic equipment shown in Figure 41 is, portable computer, multi-functional mobile phone, as can the shifting of voice call The mobile computer action that dynamic computer maybe can communicate, the most so-called smart mobile phone, the information of tablet terminal move Terminal.This information mobile terminal such as has display unit 562 on the surface of casing 561.This display unit 562 is provided with aobvious Showing device 10.This display unit 562 is in addition to the function of display image, it is also possible to have the function of detection touch action.
[the 5. form of the present invention]
The present invention can comprise following form.
(1) display device, including:
Image display panel, includes the arrangement of the pixel comprising multiple secondary pixel, i.e. periodic arrangement and comprises the 1st pair The 1st of pixel arranges, is arranged in the 2nd row comprising the 2nd secondary pixel of the next column of described 1st row and be arranged in described 2nd row The arrangement of described pixel of the 3rd row of next column；
Display functional layer, has the image display function showing image on described image display panel；
Holding wire, is connected to described 1st row, described 2nd row and each row of described 3rd row；
Controlling device, based on picture signal, the voltage applying described holding wire is between adjacent described secondary pixel or phase Difference between adjacent described pixel, drives institute with the row inversion driving mode of the polarity of this voltage applied by the periodic reversal of regulation State display function；And
Scan line, described control device sequence selects each row of described secondary pixel,
In described 3rd row, the 3rd secondary pixel and the 4th secondary pixel alternately configure along the 3rd direction arranged, and in institute Stating in same a line of the 3rd row, the described 3rd secondary pixel and the described 4th secondary pixel alternately configure,
Each scan line of described scan line, is connected to adjacent described 3rd secondary pixel and adjacent in described 3rd row One of them in described 4th secondary pixel, as secondary pixel to be selected.
(2) described (1) display device recorded, described control device by arrange in the row direction every described in one The picture signal of the secondary pixel transmission of the 3rd row transmits than other secondary pixel shift 1 horizontal pixels gone together mutually.
(3) described (1) display device recorded, described scan line is connected to the 3rd secondary pixel or adjacent of two row adjoined The 4th secondary pixel of two row.
(4) described (1) display device recorded, the described secondary pixel of described 3rd row being positioned at described same a line connects Described scan line alternately difference.
(5) described (1) display device recorded, is positioned at the described scan line that the described secondary pixel of described same a line connects, To each pixel alternately difference.
(6) described (1) display device recorded, also includes: touch detecting apparatus, is mounted or integration is at described image On display floater, outside accessible from the outside can be detected close to object.
(7) there is the electronic equipment of display device, including:
Image display panel, includes the arrangement of the pixel comprising multiple secondary pixel, i.e. periodic arrangement and comprises the 1st pair The 1st of pixel arranges, is arranged in the 2nd row comprising the 2nd secondary pixel of the next column of described 1st row and be arranged in described 2nd row The arrangement of described pixel of the 3rd row of next column；
Display functional layer, has the image display function showing image on described image display panel；
Holding wire, is arranged in each row of described 1st row, described 2nd row and described 3rd row；
Controlling device, based on picture signal, the voltage applying described holding wire is between adjacent described secondary pixel or phase Difference between adjacent described pixel, drives institute with the row inversion driving mode of the polarity of this voltage applied by the periodic reversal of regulation State display function；And
Scan line, described control device sequence selects each row of described secondary pixel,
In described 3rd row, the 3rd secondary pixel and the 4th secondary pixel alternately configure along the 3rd direction arranged, and in institute Stating in same a line of the 3rd row, the described 3rd secondary pixel and the described 4th secondary pixel alternately configure,
Each scan line of described scan line, in described 3rd row, is connected to adjacent described 3rd secondary pixel and adjacent Described 4th secondary pixel in one of them, as secondary pixel to be selected.
The display device of the present invention can drive with row inversion driving mode, so being low-power consumption.Additionally, the present invention Display device can suppress to make the signal of the public electrode of cross talk effect.Therefore, the display device of the present invention can reduce image Quality deterioration, it is provided that the image of more high brightness or video.Additionally, the electronic equipment of the present invention possesses the display device of the present invention, It is possible to the power consumption of suppression display device, and reduce the deterioration in image quality of display device.
In accordance with the invention it is possible to provide suppression power consumption and reduce the display device of deterioration in image quality of display device And electronic equipment.
Above, describe the present invention, but the present invention is not limited to foregoing.Additionally, in the invention described above In element, comprise the element that those skilled in the art are readily apparent that, the element being substantially the same, so-called equal The element of scope.And, above-mentioned element can be appropriately combined.Additionally, without departing from the scope of spirit of the present invention The various omissions of element can be carried out, change and change.

Claims (4)

1. a display device, including:
Image display panel, includes the arrangement of the pixel comprising multiple secondary pixel, i.e. periodic arrangement and comprises the 1st secondary pixel The 1st row, be arranged in the 2nd row comprising the 2nd secondary pixel of the next column of described 1st row and be arranged under described 2nd row The arrangement of the described pixel of the 3rd row of string；
Display functional layer, has the image display function showing image on described image display panel；
Holding wire, is connected to described 1st row, described 2nd row and each row of described 3rd row；
Controlling device, based on picture signal, the voltage applying described holding wire is between adjacent described secondary pixel or adjacent Difference between described pixel, drives described aobvious with the row inversion driving mode of the polarity of this voltage applied by the periodic reversal of regulation Show function；And
Scan line, described control device sequence selects each row of described secondary pixel,
In described 3rd row, the 3rd secondary pixel and the 4th secondary pixel alternately configure along the 3rd direction arranged, and the described 3rd In same a line of row, the described 3rd secondary pixel and the described 4th secondary pixel alternately configure,
Described 2nd secondary pixel of the described 1st secondary pixel and described 2nd row that are positioned at described 1st row of described same a line connects Described scan line is identical, and the described 3rd secondary pixel and the described 4th secondary pixel that alternately configure in described same a line connect Described scan line different, the described 3rd secondary pixel in described same a line connects same scan line, described in described same a line 4th secondary pixel connects same scan line.
2. display device as claimed in claim 1,
The picture signal ratio that the secondary pixel every described 3rd row of arranged in the row direction will be transmitted by described control device Other secondary pixel shift 1 horizontal pixels gone together mutually transmit.
3. display device as claimed in claim 1, also includes:
Touch detecting apparatus, is mounted or integration is on described image display panel, can detect outside accessible from the outside and connect Nearly object.
4. having an electronic equipment for display device, described display device includes:
Image display panel, includes the arrangement of the pixel comprising multiple secondary pixel, i.e. periodic arrangement and comprises the 1st secondary pixel The 1st row, be arranged in the 2nd row comprising the 2nd secondary pixel of the next column of described 1st row and be arranged under described 2nd row The arrangement of the described pixel of the 3rd row of string；
Display functional layer, has the image display function showing image on described image display panel；
Holding wire, is arranged in each row of described 1st row, described 2nd row and described 3rd row；
Controlling device, based on picture signal, the voltage applying described holding wire is between adjacent described secondary pixel or adjacent Difference between described pixel, drives described aobvious with the row inversion driving mode of the polarity of this voltage applied by the periodic reversal of regulation Show function；And
Scan line, described control device sequence selects each row of described secondary pixel,
In described 3rd row, the 3rd secondary pixel and the 4th secondary pixel alternately configure along the 3rd direction arranged, and the described 3rd In same a line of row, the described 3rd secondary pixel and the described 4th secondary pixel alternately configure,
Described 2nd secondary pixel of the described 1st secondary pixel and described 2nd row that are positioned at described 1st row of described same a line connects Described scan line is identical, and the described 3rd secondary pixel and the described 4th secondary pixel that alternately configure in described same a line connect Described scan line different, the described 3rd secondary pixel in described same a line connects same scan line, described in described same a line 4th secondary pixel connects same scan line.
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